/* Copyright (C) 2008  Romolo Camplani, Marco Fortunato, Marco Marelli, Guido Rota, Fabio A. Schreiber et al.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.dei.perla.parser.expressions;

import org.dei.perla.parser.util.FieldType;
import java.lang.reflect.*;

public class ConstantFactory {

	public static Constant create(FieldType parDataType, String parValue) throws ConstantCreationException {
		
		if (parValue == null) {
			return new ConstantNull();
		}
		
		Object tArgList[] = new Object[1];
		tArgList[0] = parValue;
		
		try {
			Constructor<?> tConstructor = parDataType.getFieldTypeClass().getConstructor(parValue.getClass());
			return (Constant) tConstructor.newInstance(tArgList);
			
		} catch (Exception e) {
			throw new ConstantCreationException(e.getMessage());
		}
	}
}
